HP 54645A User's And Service Manual page 276

Measurement already selected
This message appears when you select a single-channel measurement that is
already running. Note that measurement results for the selected
measurement are displayed on the message line, but are temporarily
overwritten by this message.
No active signal was found: Please check connections
This message appears when you select Autoscale, but the oscilloscope was
unable to find an input signal on any channel at any threshold setting.
Check that the input cable is correctly connected to the oscilloscope.
Check that the probes are connected to valid signal lines in the circuit
under test.
Check power to the circuit under test.
Check the activity indicators.
No cursor is selected: Please select one in the Cursors menu
This message appears when you turn the Entry knob while using a menu that
has no field selectable via Entry. Normally, for those menus, the softkeys,
Select, or Move are the only valid choices.
No printer interface is installed: Refer to manual for help
You selected Print Screen from the Print/Utility menu. However, there is no
printer interface module installed. You must install an HP interface module
(Centronics, HP-IB, or RS-232, as appropriate) for the oscilloscope to
connect to the printer.
Printing is in process: Please cancel print first
This message appears when you try to reconfigure the interface parameters
for the I/O module while printing. You must either cancel printing with the
Cancel Print softkey or wait until printing has completed before reconfiguring
the interface.
Printer is not responding: Check configuration & connections.
You selected Print Screen in the Print/Utility menu, and there is an interface
installed, but the printer is not responding.
Check that the printer is turned on and has paper.
Check that the interface module is connected to the printer and that the
correct interface type is being used.
Messages
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